654
FZUS51 KBOX 131705
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
105 PM EDT THU AUG 13 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-140600-
105 PM EDT THU AUG 13 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
WEAK FRONTAL BOUNDARIES WILL TRAVERSE THE COASTAL WATERS THROUGH
FRI, WITH LITTLE IMPACT OUTSIDE OF SCATTERED SHOWERS AND
THUNDERSTORMS. DURING THIS TIME, WINDS AND SEAS WILL REMAIN BELOW
ADVISORY CRITERIA. THIS WEEKEND, BRIEF HIGH PRES BUILDS IN FROM THE
NW, FOLLOWED BY LOW PRES MOVING OUT OF THE NORTHERN GREAT LAKES LATE
SUN INTO MON, BRINGING A RETURN TO UNSETTLED CONDITIONS.
ANZ250-140600-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SE 1 FOOT AT 3 SECONDS AND W 1 FOOT AT 3 SECONDS. A
CHANCE OF SHOWERS.
TONIGHT
W WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND SE 1 FOOT AT
3 SECONDS.
FRI
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT
AT 3 SECONDS AND S 1 FOOT AT 4 SECONDS.
FRI NIGHT
W WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT AT
4 SECONDS.
SAT
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT
AT 4 SECONDS AND S 1 FOOT AT 5 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: S 1 FOOT AT 3 SECONDS AND W 1 FOOT AT
3 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT.
SUN NIGHT AND MON
S WINDS AROUND 15 KT, BECOMING NW. GUSTS UP
TO 25 KT. SEAS 2 TO 3 FT. SHOWERS LIKELY.
MON NIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-140600-
MASSACHUSETTS BAY AND IPSWICH BAY-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
S WINDS AROUND 5 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: W 1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 3 SECONDS. A
SLIGHT CHANCE OF SHOWERS.
TONIGHT
NW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL:
W 1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 3 SECONDS.
FRI
NW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 3 SECONDS.
FRI NIGHT
NW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: N 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 3 SECONDS.
SAT
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND SW 1 FOOT
AT 3 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
1 FOOT OR LESS. WAVE DETAIL: W 1 FOOT AT 2 SECONDS AND SE 1 FOOT
AT 2 SECONDS.
SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT.
SUN NIGHT AND MON
S WINDS 10 TO 15 KT, BECOMING NW. GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. SHOWERS LIKELY.
MON NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-140600-
CAPE COD BAY-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS AROUND 5 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SW 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 3 SECONDS. A
CHANCE OF SHOWERS.
TONIGHT
W WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND
2 FT AFTER MIDNIGHT. WAVE DETAIL: W 1 FOOT AT 2 SECONDS AND S
1 FOOT AT 3 SECONDS, BECOMING E 1 FOOT AT 2 SECONDS AND NW 1 FOOT
AT 2 SECONDS.
FRI
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE MORNING, THEN
1 FOOT OR LESS. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT
AT 5 SECONDS, BECOMING N 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT
6 SECONDS.
FRI NIGHT
SW WINDS AROUND 5 KT, BECOMING N AFTER MIDNIGHT.
SEAS 1 FOOT OR LESS, THEN AROUND 2 FT AFTER MIDNIGHT. WAVE
DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT AT 5 SECONDS.
SAT
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE MORNING, THEN
1 FOOT OR LESS. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT
AT 6 SECONDS, BECOMING N 1 FOOT AT 4 SECONDS AND S 1 FOOT AT
8 SECONDS.
SAT NIGHT
S WINDS AROUND 5 KT, BECOMING SW AROUND 5 KT AFTER
MIDNIGHT. SEAS 1 FOOT OR LESS. WAVE DETAIL: N 1 FOOT AT 4 SECONDS
AND S 1 FOOT AT 5 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT.
SUN NIGHT AND MON
SW WINDS 10 TO 15 KT, BECOMING NW. GUSTS UP
TO 25 KT. SEAS 2 TO 4 FT. SHOWERS.
MON NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-140600-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 4 SECONDS AND NW 1 FOOT AT 3 SECONDS. A CHANCE
OF SHOWERS.
TONIGHT
W WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND S 2 FT AT
5 SECONDS.
FRI
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT
AT 3 SECONDS AND S 2 FT AT 5 SECONDS.
FRI NIGHT
SW WINDS AROUND 5 KT, BECOMING N AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: NW 1 FOOT AT 4 SECONDS AND S
1 FOOT AT 5 SECONDS.
SAT
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT
AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS.
SAT NIGHT
W WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS AND S 1 FOOT
AT 6 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT.
SUN NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT. SHOWERS LIKELY.
MON
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. SHOWERS LIKELY.
MON NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-140600-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
TONIGHT
W WINDS AROUND 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND E 1 FOOT AT
4 SECONDS.
FRI
N WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND SW 2 FT AT 5 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS
AND W 1 FOOT AT 3 SECONDS.
SAT
N WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND
S 1 FOOT AT 6 SECONDS.
SAT NIGHT
E WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: NW 1 FOOT AT 3 SECONDS AND NE
1 FOOT AT 4 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT.
SUN NIGHT AND MON
SW WINDS 20 TO 25 KT. SEAS 3 TO 5 FT.
SHOWERS.
MON NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-140600-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 2 FT AT 5 SECONDS AND W 1 FOOT AT 4 SECONDS.
TONIGHT
W WINDS 10 TO 15 KT, BECOMING NW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND NE 1 FOOT AT
5 SECONDS.
FRI
N WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND N 1 FOOT AT
3 SECONDS.
FRI NIGHT
W WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND
SW 2 FT AT 5 SECONDS.
SAT
N WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND
S 1 FOOT AT 6 SECONDS.
SAT NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NE 1 FOOT AT 3 SECONDS AND W 1 FOOT AT 3 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT.
SUN NIGHT
SW WINDS 20 TO 25 KT. SEAS 3 TO 5 FT. SHOWERS.
MON
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
5 FT. SHOWERS LIKELY.
MON NIGHT
NW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-140600-
NANTUCKET SOUND-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE
OF SHOWERS.
TONIGHT
W WINDS AROUND 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: E 1 FOOT AT 4 SECONDS AND SW 1 FOOT AT
4 SECONDS.
FRI
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
1 FOOT OR LESS, THEN AROUND 2 FT AFTER MIDNIGHT. WAVE DETAIL: W
1 FOOT AT 2 SECONDS AND NE 1 FOOT AT 3 SECONDS, BECOMING N 1 FOOT
AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND S 1 FOOT AT 5 SECONDS.
SAT NIGHT
SE WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
SEAS 1 FOOT OR LESS. WAVE DETAIL: NW 1 FOOT AT 2 SECONDS AND NE
1 FOOT AT 3 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT.
SUN NIGHT AND MON
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 2 TO 3 FT. SHOWERS.
MON NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-140600-
VINEYARD SOUND-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
TONIGHT
W WINDS AROUND 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND NE 1 FOOT AT
4 SECONDS.
FRI
N WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND N 1 FOOT AT
3 SECONDS.
FRI NIGHT
W WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT
4 SECONDS.
SAT
N WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR LESS. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS, BECOMING N 1 FOOT
AT 2 SECONDS AND S 1 FOOT AT 6 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
1 FOOT OR LESS. WAVE DETAIL: NE 1 FOOT AT 2 SECONDS AND SW 1 FOOT
AT 4 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT.
SUN NIGHT AND MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. SHOWERS.
MON NIGHT
NW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-140600-
BUZZARDS BAY-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: W 1 FOOT AT 3 SECONDS AND S 1 FOOT AT 4 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
TONIGHT
W WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS. WAVE DETAIL: E
1 FOOT AT 4 SECONDS AND SW 1 FOOT AT 5 SECONDS, BECOMING N 1 FOOT
AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS.
FRI
NW WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. SEAS
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS, BECOMING NW
1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS.
FRI NIGHT
W WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
1 FOOT OR LESS. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND SW 1 FOOT
AT 4 SECONDS.
SAT
N WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND SW 1 FOOT
AT 4 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
1 FOOT OR LESS. WAVE DETAIL: NE 1 FOOT AT 2 SECONDS AND W 1 FOOT
AT 4 SECONDS.
SUN
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT.
SUN NIGHT AND MON
SW WINDS 20 TO 25 KT, BECOMING W. SEAS 2 TO
4 FT. SHOWERS.
MON NIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-140600-
RHODE ISLAND SOUND-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
TONIGHT
W WINDS AROUND 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND E 1 FOOT AT
4 SECONDS.
FRI
N WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND N 1 FOOT AT
2 SECONDS.
FRI NIGHT
W WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND
SW 2 FT AT 4 SECONDS.
SAT
N WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND
S 1 FOOT AT 6 SECONDS.
SAT NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NE 1 FOOT AT 2 SECONDS AND W 1 FOOT AT 2 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT.
SUN NIGHT AND MON
SW WINDS 20 TO 25 KT, BECOMING W 15 TO
20 KT. SEAS 3 TO 5 FT. SHOWERS.
MON NIGHT
NW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-140600-
BLOCK ISLAND SOUND-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
TONIGHT
W WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND NE 1 FOOT AT
4 SECONDS.
FRI
N WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 2 SECONDS AND S 1 FOOT AT
5 SECONDS.
FRI NIGHT
W WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: W 1 FOOT AT 2 SECONDS AND S 1 FOOT AT
5 SECONDS.
SAT AND SAT NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT AT 6 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND SW 2 FT AT 3 SECONDS.
SUN NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT. SHOWERS LIKELY.
MON
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. SHOWERS LIKELY.
MON NIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-140600-
BOSTON HARBOR-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS. A
SLIGHT CHANCE OF SHOWERS.
TONIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
SAT
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
SAT NIGHT
S WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT.
SUN NIGHT AND MON
SW WINDS 10 TO 15 KT, BECOMING NW. GUSTS UP
TO 20 KT. WAVES AROUND 2 FT. SHOWERS LIKELY.
MON NIGHT
N WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-140600-
NARRAGANSETT BAY-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A
SLIGHT CHANCE OF SHOWERS.
TONIGHT
W WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. WAVES
AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS.
FRI
N WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
FRI NIGHT
NW WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES 2 TO
3 FT.
SUN NIGHT
SW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. SHOWERS
LIKELY.
MON
W WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. SHOWERS LIKELY.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ280-140600-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SE 2 FT AT 4 SECONDS AND W 1 FOOT AT 3 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
TONIGHT
W WINDS 5 TO 10 KT, BECOMING NW 10 TO 15 KT WITH GUSTS
UP TO 20 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: NW
2 FT AT 3 SECONDS AND SE 2 FT AT 4 SECONDS.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT
AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS.
FRI NIGHT
W WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: N
2 FT AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS.
SAT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING TO
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT
AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS.
SAT NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NW 2 FT AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT.
SUN NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
AROUND 3 FT. SHOWERS LIKELY.
MON
W WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT. A CHANCE OF SHOWERS.
MON NIGHT
NW WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-140600-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 2 FT AT 6 SECONDS AND NW 1 FOOT AT 3 SECONDS. A CHANCE
OF SHOWERS.
TONIGHT
SW WINDS 5 TO 10 KT, BECOMING NW WITH GUSTS UP TO
20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT
6 SECONDS AND NW 2 FT AT 3 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM,
DECREASING TO 1 NM OR LESS AFTER MIDNIGHT.
FRI
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND SW 2 FT AT
6 SECONDS.
FRI NIGHT
W WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND S 1 FOOT AT
5 SECONDS.
SAT
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT
4 SECONDS AND S 1 FOOT AT 6 SECONDS.
SAT NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NW 2 FT AT 5 SECONDS AND S 1 FOOT AT 6 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT.
SUN NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 5 FT. SHOWERS LIKELY.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT. SHOWERS LIKELY.
MON NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 5 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ282-140600-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: W 3 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
TONIGHT
W WINDS AROUND 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 1 FOOT AT
10 SECONDS.
FRI
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NW 2 FT
AT 4 SECONDS AND S 2 FT AT 6 SECONDS.
FRI NIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NW
1 FOOT AT 4 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT
4 SECONDS AND S 1 FOOT AT 6 SECONDS.
SAT NIGHT
NE WINDS AROUND 5 KT, BECOMING W AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS AND S 1 FOOT
AT 6 SECONDS.
SUN
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
SUN NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 FT. SHOWERS LIKELY.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT. SHOWERS LIKELY.
MON NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 5 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ283-140600-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
105 PM EDT THU AUG 13 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. SEAS AROUND 3 FT. WAVE
DETAIL: W 3 FT AT 5 SECONDS AND E 1 FOOT AT 8 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
TONIGHT
W WINDS 10 TO 15 KT, BECOMING NW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND E 1 FOOT AT
10 SECONDS.
FRI
N WINDS 5 TO 10 KT, BECOMING NW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND SW 1 FOOT AT
5 SECONDS.
FRI NIGHT
W WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND SW
1 FOOT AT 6 SECONDS.
SAT
N WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND S
1 FOOT AT 6 SECONDS.
SAT NIGHT
E WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 4 SECONDS AND S 1 FOOT
AT 7 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT.
SUN NIGHT AND MON
SW WINDS 20 TO 25 KT, BECOMING W. GUSTS UP
TO 30 KT. SEAS 4 TO 6 FT. SHOWERS.
MON NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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